Hi Curtis, yes, using property activation is more or less the workaround described in MNG-4533.
If I had to pick a workaround, I would prefer checking for the existence of pom.xml. This is guaranteed to always return true. So the only way to deactivate the profile would be to deactivate it explicitly with -P!profile. With property activation a user of the project could either deactivate the profile with -P or change the property. But that's probably a matter of personal preference. Best regards, Arend On Sat, Nov 14, 2015 at 10:19 PM, Curtis Rueden <ctrue...@wisc.edu> wrote: > Hi Arend, > > > The idea is to have a profile which is always active, unless > > explicitly deactivated. > > To achieve that use case, I like to activate based on a property value. > Then you can change the property value from the CLI to deactivate it, > without affecting any other profiles. This is more flexible than using the > -P flag (which I avoid whenever possible). > > Regards, > Curtis > > On Sat, Nov 14, 2015 at 3:06 PM, Arend v. Reinersdorff <ar...@arendvr.com> > wrote: > > > Hi Karl Heinz, > > > > good point. I'll try to elaborate more: > > > > The idea is to have a profile which is always active, unless explicitly > > deactivated. One can nearly achieve this with > > <activeByDefault>true</activeByDefault>, but not quite because an > > activeByDefault profile is deactivated if another profile from the same > > pom.xml is activated. > > > > So this is needed when: > > - one profile should always be active, but can be turned off explicitly > > - another profile can be activated, and activating it should not > deactivate > > the always active profile > > > > > > Here's a concrete example. Solution taken from this answer on > Stackoverflow > > > > > http://stackoverflow.com/questions/5539348/how-to-exclude-a-module-from-a-maven-reactor-build/11429945#11429945 > > > > - a multi module project > > - normally all modules are included in a build > > - in some cases certain modules (data-foo and data-bar) should be > excluded > > from the build (in the Stackoverflow question because the tests took a > long > > time, I was researching it to exclude modules from Javadoc generation) > The > > modules are excluded with "mvn -!Pfull-build" > > - also, there's another profile to change the target directory. > Activating > > this should not interfere with module exclusion. "mvn -PtargetInTemp > clean > > install" should still build all modules. > > > > <!-- modules always included --> > > <modules> > > <module>common</module> > > <module>foo</module> > > <module>bar</module> > > </modules> > > > > <profiles> > > <profile> > > <id>full-build</id> > > <activation> > > > > <!-- current, ugly workaround for an always active profile > > MNG-4533 would improve this --> > > <file> > > <exists>pom.xml</exists> > > </file> > > > > </activation> > > <modules> > > <module>data-foo</module> > > <module>data-bar</module> > > </modules> > > </profile> > > > > <profile> > > <!-- A profile commonly found in our company. Moves the target > > directory to $TEMP. > > To build the project without interference from Eclipse. --> > > <id>targetInTemp</id> > > <build> > > > > > <directory>${env.TEMP}/${project.groupId}/${project.artifactId}</directory> > > </build> > > </profile> > > </profiles> > > > > > > Best regards, > > Arend > > > > > > On Sat, Nov 14, 2015 at 2:20 PM, Karl Heinz Marbaise <khmarba...@gmx.de> > > wrote: > > > > > Hi, > > > > > > On 11/14/15 2:03 PM, Arend v. Reinersdorff wrote: > > > > > >> Hi, > > >> > > >> could issue MNG-4533 "Add an always active profile activator" please > be > > >> reopened? > > >> https://issues.apache.org/jira/browse/MNG-4533 > > >> > > >> The issues was automatically closed in 2014. > > >> > > >> I find the current workarounds to create an always active profile > (check > > >> for non existing property, check for always existing file) quite ugly. > > >> > > > > > > > > > The question is why do you need a profile which is always active ? In > > > consequence i would ask why do you need a profile at all in such case? > If > > > it is always active you don't need a profile.... > > > > > > > > > May be you can elaborate more what you like to achieve and what the use > > > case is? > > > > > > > > > Kind regards > > > Karl Heinz Marbaise > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: users-unsubscr...@maven.apache.org > > > For additional commands, e-mail: users-h...@maven.apache.org > > > > > > > > >
